DESCRIPTION:
Ogee-Crested Weir with Pressure Measurement (FM-1361.5)
Ogee-crested weirs are fixed weirs and form part of the control structures. They are often used to dam a river. The weir itself consists of a massive damming body. The outer weir contours roughly correspond to a triangle. The downstream side of the weir is often designed to improve flow, in order to achieve the largest possible discharge.
The pressure distribution along the downstream side of the weir is studied. The pressure measurement is realized via bores perpendicular to the surface of the downstream side of the weir. The heads are directly indicated on the integrated manometer tubes.
Technical details
| Manometer tubes | ||
| Measuring range | : | 290mmwc |
| Weir with chute LxWxH | : | 172x84x160 mm |
| Weir with chute with ski jump LxWxH | : | 210x84x160 mm |
| Total weight | : | approx. 4kg |
Specification
- Ogee-crested weir for the experimental flume
- Weir crest with chute with ski jump
- Weir crest with chute
- Weir body made of PVC
- Weir body with sealing lips
Experimentation
- Hydrodynamic overfall at the ogee-crested weir
- Pressure distribution along the downstream side of the weir for different discharges
- Nappe separation
- Determination of discharge and head
Comparison of the theoretical and the measured discharge
